Answers

drop all connections is listed in the blog. The default database can be tweaked by either changing the default database of the user, or using it directly within the connection string -> Initial Catalog=master

Two things you must remember when attempting to restore: 1) you must have sysadmin or dbcreator privileges, and 2) you cannot be connected to the database you're attempting to restore. Set your current database to 'master' before issuing the restore command.

drop all connections is listed in the blog. The default database can be tweaked by either changing the default database of the user, or using it directly within the connection string -> Initial Catalog=master